sommer



0. SUMMER.

WEIR.

APPLICATION FILED FEB. 6, 1917- Patented Nov. 18, 1919.

' 2 SHEETS-SHEET 0. SOMMER.

WEIR.

APPLICATION FILED FEB. 6, NH].

1,322,146. Patented Nov. 18, 1919.

2 SHEETS-SHEET 2.

To all whom it may concern Be it known that 1,1013'1'0 SOMMER, anAustrian subject, residing at Zurich, Switzerland, have invented certainnew anduse ful Improvements in Weir's, of which the following is aspecificatioii'. l

The invention relates toi a dam and, a movable crest (such as adrum-mess nger; trap-crest and the like) pivoteldthereto adapted to beoperated by the water pressure of the upper level; The objectfof'thfeinveiitionis to provide in connection there- 7 with a device constructedand arranged to be automatically controlled or regulated the height ofthe upper ;water level and to control for its return the pressure of theuppeuwater against thel movable ucrest so that the crest will te'rockedaccordingly, in order to automatically keep or maintain'a predeterminedupper-water. level notwithstanding the variations of its Water supply;With this end in view my invention con sists in certain novel featuresof construction and combinations of parts as will be fully describedhereinafter with reference to the accompanying sheets of drawings inwhich: p Figure l is' a vertical section the provedautomaticcontrollingde ice in ciori nection' with a dam and a movablecrest hinged relation t'liereto, the upper water be; ing atnormallheightf ithe' c'rest and the device in their positions of rest; Cp

r -L2 shows qsi fr sweetenesent'atio'n'; the upper, Waite having risen.

above normal level; the go trbuiiig device andfthe 'crest" being incorresponding opera: tivetpositioiis'r 5; t

Fig: 3: shows the controlling device as? in dica'ted iii-i 1 inadet'ailed View on a larger scale p a e v i l sett e Pee Selle scale ofa modified form of the controlllng Fig. 5 is a similar. sectionallviewas'Fi'g. illustrating af further modification of the controlling device;r

S'rn'lar numerl of reference refer to like parts; throughoutl tliefigures;

Referring: to Figs. the controlling de vice comprises a cylindricalslulce-valve a mounted in well or shaft band adapted to cut ofi'yjvvhenin its lower end position an openingp in the bottom wall or bed' I) oftlie sh aftfl (Figs; 1 and 3'). The interior of this shaft is incoinniunication with the pressure chamber (Z of the dam D by a suitablechannel a or the like. The lower portloiifofthe' crest Q pivoted-at C?to the dam structure; extends into the said pressure chamber'd YVithinthe cylindrical sluice valve a'is' arrang'ed'a vessel 7 extending up toaboye thehigh water level of the upper pond an'd lieing supported by ahollow foot g o thelike in comm unication witli the said vess chamberbiunderneath the shaft-bed b and all; iines in connnimication with theupper wate'r' by means of a suitable conduit P PQB';i7.. (F le11d2)- he]Water i the vessel] tendsltherefore t o rise to thesaine heightj asthelevel of the upper water to be This footrests on the bottom of acontrolled? 1111 0 the vesselj is nested af When the level of the eupperwater rises above the normal height, for example for the'fdi'stance'K2,? the flo at h and the sluice,

valve ci like wise rise allovvfwater to flow ofl'rrpm the shaft 6 andthe pressure chamber dw through the opened passage 0 4 into thedischarge chamber 6 in connection with'flthelower pond, (Fig. 2). Thisdischarge off water causes a. decrease of the pressure in thejchainberd. Owing to the diminutioniii pressure on the lower portion of the;crest and to the increase in pressure onl the; upper portioii ofthecrest resulting therefrom, there exists a moment to cause thejlcrest torock or overturn. In overturning the lower portion of the crest pushesaside the contents of the pressure chamber (Z, while the upper portionof the rocked crest allows the upper water to discharge over its topinto the lower pond, (Fig. 2). The overturning of the crest increases,until the level of the upper water has sunk sufficiently or thesluice-valve sinking with the float accordingly, has throttled thedischarge of water through the outlet passage 6 so far, that theoverturning moment is compensated for by the again increasing waterpressure acting in the pressure chamber on the lower portion of thecrest. The crest remains then stationary in the corresponding overturnedposition, (Fig. 2). \Vhen the level of the upper water is sinking stillfarther, the discharge of water from the pressure chamber will likewisebe throttled to a still greater extent, the water pressure in thechamber d will increase still more and finally exceed the moment actingto overturn the crest. The latter then rights itself again by rocking orturning back into the position shown in Fig. 1, while the sluice-valvereturns into its cutting-01f position.

By varying the weight of the float by means of suitable additionalweights preferably to be attached to the sluice-valve, or by adjustingthe length of the connecting means if between the float and the valve,the controlling device may be adjusted for different maximum levels ofthe upper water. The float it moving in the vessel f onlywith smallplay, acts at the same time as a hydraulic brake, whereby the hammeringotherwise usual with cylindrical sluicevalves is obviated.

In the modification disclosed by Figs. 4: and 5 a tank 7; of a diameterd is connected with or mounted upon the float h of a diameter D, thetank being supplied through a pipe with water from the stationary vessel7, the pipe 70 being preferably passed through the floating body h asshown in drawing. Through this pipe 70 is passed a small distance apartan over-fall or by-wash pipe m which is supported by a hollow form piecem fastened in the bottom of the vessel and discharging into the passage0. The upper end or overfall-rim of the pipe m is at the same height asthe normal level of the upper water. By applying a cap or hood a overits upper end the pipe m may be made to act as an automatic siphon. Thefloat k is loaded in a similar manner as the float h (Figs. 1-8), sothat its floating power at normal level of the upper water is just equalto the total weight of the parts to be lifted and of the water containedin the tank 2'.

The mode of operation of this modified form of controlling device is asfollows: Vhen the level of the upper level is rising for a certainheight, for example for a distance 2 the float together with the tank iand the sluice-valve a rise for the same distance 2. But by such risinga part of the water-ballast contained in the tank, namely a water columnequal to the volume of the cylinder is discharging through the pipe m,as the latter can discharge much more water than the annular channelbetween the two pipes in and m is able to supply. The total weight ofthe raised parts will thereby be reduced for the weight of the watercolumn For this reason the float with the parts attached thereto willcontinue to rise until the reduction in weight caused by the diminutionof the water ballast has become equal to the decrease in buoyance ofthefloat.

To the above statement applies the following arithmetical relation:

The decrease in weight of the water-ballast after the float has passedthe way 93 is equal to The decrease in buoyancy of the float is equal togh e- 7 of the said tank can take place only slowly. i By varying thetotal weight or the additional weights or by adjusting the length of theconnecting screw bolts of the float the controlling devices according tothe Figs. 4 and 5 may be adjusted to apply likewise to different maximumlevels of the upper water.

Some times it may be desired to automatically regulate not only theoulet 0 but also the inlet 0 of the shaft 6 in such a manner that thewater supply is throttled, when the outlet passage 0 opens, and viceversa. For this purpose, the sluice-valve a (Fig. 5) is provided with atubular slide p which according to its being raised or lowered by thesluice-valve or float respectively, narrows or widens the crosssectional area of the Water inlet 0. The general arrangement of thesluice-valve with relation to the dam or to the pressure chamber when acrest is concerned, remains the same as shown in Figs. 1 and 2.

I claim:

1. The combination with a dam and a movable crest in pivoted relationthereto, of a controlling device for automatically regulating the waterpressure on the crest and thereby operating the latter, comprising ashaft communicating with a chamber of the dam and a separatedischarge-chamber, a cylindrical sluice-valve within the said shaft andnormally cutting off the communication to the discharge-chamber, astationary cup-shaped vessel extending up to the high water level of theupper water and being at all times in communication with the u )perwater to be regulated, and a floatingody within the said vessel andconnected to said sluice-valve to operate the same upon a rise of waterbeyond the normal in the upper pond, as and for the purpose set forth.

2. The combination with a dam and a movable crest in pivoted relationthereto, of a controlling device for automatically regulating the water,pressure on the crest and thereby operating the latter, comprising ashaft communicating with a chamber of the dam and a separatedischarge-chamber, a cylindrical sluice-valve within the said shaft andnormally cutting off the communication to the discharge-chamber. astationary cup-shaped vessel extending up to the high water level of theupper water and being at all times in communication with the upper waterto be regulated, a floating body within the said vessel and connected tosaid sluice-valve to operate the same and a water ballast tank carriedby the floatingbody and provided with an overflow adapted to regulatethe water ballast in accordance with the rising and sinking of thefloat, as and forthe purpose set forth.

3. The combination with a dam and a movable crest in pivoted relationthereto, of a controlling device for automatically regulating the waterpressure on the crest and thereby operating the latter, comprising ashaft communicating with a chamber of the dam and a separatedischarge-chamber, a cylindrical sluice-valve within the said shaft andnormally cutting ofi the communication to the discharge-chamber, astationary cup-shaped vessel extending up to the high water level of theupper water and being at all times in communication with the upper waterto be regulated, a floatingbody within the said vessel and connected tosaid sluice-valve to operate the same, and a tubular slide rigidlyconnected with the sluice-valve and adapted to throttle the inlet of theshaft according to the rising of the sluice-valve, as and for thepurpose set forth.

a. The combination with a dam and a movable crest in pivoted relationthereto, of a controlling device for automatically regulating the waterpressure on the crest and thereby operating the latter, comprising ashaft communicating with a chamber of the dam and a sepr ratedischarge-chamber, a cylindrical sluice-valve within the said shaft andnormally cutting off the communication to the discharge chamber, astationary cupshaped vessel extending up to the high water level of theupper water and being at all times in communication with the upper waterto be regulated, and a floating-body within the said vessel andconnected to said sluice-valve to operate the same, a water ballast tankcarried by the floating body and provided with an overflow adapted toregulate the water ballast in accordance with the rising and sinking ofthe float, and a. tubular slide rigidly connected with the sluice-valveand adapted to throttle the inlet of the shaft according to the risingof the 'sluice-valve, as and forthe purpose set forth.

OTTO SOMMER.

